Middle and High School … from a Montessori Point of View
While I do like to use animated gifs, these apparent animations are actually still images that, because of the arrangement of colors and shapes, your brain interprets as moving. Akiyoshi Kitaoka has an extensive gallery. It comes with the warning though: ‘works of “anomalous motion illusion”, … might make sensitive observers dizzy or sick.’ (Kitaoka, 2011).
Spurred by Philip Stewart‘s comment that, “The first ever image of the periodic system was a helix, wound round a cylinder by a Frenchman, Chancourtois, in 1862,” I was looking up de Chancourtois and came across David Black’s Periodic Table Videos. They put things into a useful historical context as they explore how the patterns of periodicity were discovered, in fits and starts, until Mendeleev came up with his version, which is pretty much the basis of the one we know today.
The cylindrical version is pretty neat. I think I’ll suggest it as a possible small project if any of my students is looking for one. You can, however, find another interesting 3d periodic table (the Alexander Arrangement) online.
We watched Stanley Kubric’s, Dr. Strangelove, today as part of our mini film festival. Most of the middle and high school students got the choice of what to watch, but the Dr. Strangelove was required for the American History students.
My second question during our discussion after the movie was, “What does this have to do with the Cold War?” I got a number of blank stares. The next question was, “Do you know what the Cold War was?” Apparently they’ll be getting to that next semester.
Dr. H tells me that she’s heard the complaint from the college history department that incoming students don’t know much, if anything, about the Cold War. It’s now history. It occurred before any of them were born. Is this a lament? An observation about aging? I’m not sure.
LiveScience has a neat little slideshow that briefly describes the different types of elementary particles. These include the particles, like quarks that make up protons, which have been observed, as well as sparticles and the Higg’s boson that have not.
CERN also has a nice page describing the Standard Model.
A while back, I posted a radio article by Planet Money on why gold is so valuable, and has been used for money for so long (God, Glory and GOLD: but why gold?). They’ve now created a nice video explaining the same thing. Though there’s less detail, the dramatic visuals (of the reactivity of sodium for example) make it quite interesting.
When it comes to particle physics … [m]easuring something once is meaningless because of the high degree of uncertainty involved in such exotic, small systems. Scientists rely on taking measurements over and over again — enough times to dismiss the chance of a fluke.
— Moskowitz (2011): Is the New Physics Here? Atom Smashers Get an Antimatter Surprise in LiveScience
New research, out of the Large Haldron Collider in Switzerland, shows a 0.8% difference in the way matter and antimatter particles behave. This small difference could go a long way in explaining why the universe is made up mostly of matter today, even though in the beginning there were about equal amounts of matter and antimatter. It would mean that the current, best theory describing particle physics, the Standard Model, needs some significant tweaking.
0.8% is small, but significant. How confident are the physicists that their measurements are accurate? Well, the more measurements you take the more confident you can be in your average result, though you can never be 100% certain. The LHC scientists did enough measurements that they could calculate, statistically, that there is only a 0.05% chance that their measurement is wrong.
Cahokia‘s just one of almost a thousand sites around the world that UNESCO considers to form, “part of the cultural and natural heritage” of the world that has “outstanding universal value.”
It’s a remarkable selection of places, from natural geological wonders like the Grand Canyon, to biological preserves like Peru’s Manú National Park, to cultural landscapes like that of Bam, Iran.
The long, detailed descriptions of the importance of these sites makes the World Heritage List website is a remarkable resource for cultural and physical geography.
Almost a thousand years ago, 20,000 people lived at a place called Cahokia. At the center of their city, was the largest artificial mound in North America. A large part of Cahokia’s success is surely its location: near the confluence of the Mississippi and Missouri Rivers — just across the Mississippi from modern-day St. Louis. Yet less than 400 years later (see timeline) the city was abandoned, and no one is quite sure what happened.
Our middle and high school took a trip out to Cahokia last month. It was during the same intercession between quarters when we visited the Laumeier Sculpture Park, the Da Vinci Exhibition, and did our brief biological survey of the campus.
The elevation of the main mound, sitting on the flat Mississippi flood plain, with the St. Louis skyline in the distance, was a great place to talk about the importance of physical geography in the location of cities (your biggest cities are always going to be on rivers, or the ocean or, often, both) and to reflect on how history repeats itself — a once thriving metropolis is nothing now but displaced piles of alluvium and mystery.
View Cahokia in a larger map
Cahokia is a World Heritage Site, and it has an excellent museum. I particularly liked the detail in their life-sized reconstruction of a section of the city.
Their website is also good. Apart from the timeline, mentioned above, they have a nice interactive map for details about each of the numerous mounds, and a long page about the archeology.
The site is pretty big, so you can spend a fair amount of time exploring. Fall, when the leaves have turned color, and the air has cooled a little, is an excellent time to visit.
